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    <p>When you create a project that targets a specific version of the framework, you're telling the compiler which version of the framework libraries and runtime that the computer on which the project will run has installed. For example, System.dll in 3.5 and System.dll in 4.0 aren't the same, much like why System.dll in 2.0 and 3.5 aren't the same. </p> <p>In theory, you can't guarantee forwards compatibility (3.5 referencing a 4.0) because the 4.0 assembly may use APIs that aren't present in 3.5. Likewise, you can't guarantee 2.0 backwards compatibility in 4.0 because some of the APIs may have been deprecated and removed. </p> <p>In practice, 4.0 has enough backwards compatibility with 3.5 that they allow you to reference 3.5 assembles in 4.0 applications, with some caveats (you sometimes need to <a href="http://msdn.microsoft.com/en-us/library/bbx34a2h.aspx" rel="noreferrer">add a directive</a> in your configuration file, since assembly loading in 4.0 changed from 3.5). Unfortunately, 3.5 doesn't have much forwards compatibility with 4.0 due to the massive number of new APIs that 4.0 introduced, so I don't think that you can reference 4.0 assemblies from 3.5.</p> <p>You're seeing that schema information exception for probably this reason. the "supportedRuntime" is a configuration element that was introduced with .NET 4.0. But since you're referencing the assembly in 3.5, the .NET 3.5 version of System.Configuration, which parses the configuration file, doesn't recognize that element and thus throws an exception.</p> <p>The only way is probably to (1) change the source and re-compile, fixing all the API calls to 4.0 libraries that don't work in 3.5, or (2) do the same thing, but at the IL level, generating a new assembly (you can do this with al.exe).</p>
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    1. POHow to reference framework 4.0 dll in project targetting 3.5 in VS2008
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    1. COThanks for the suggestions. Thankfully, I found out there was actually a version of the dll available that targeted the 3.5 framework. I just didn't think to look for one at first since I had seen the source code and it used the dynamic keyword and other 4.0 features and I didn't know they maintained another version of the sourcecode.
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      1. USBrandon Moore
 

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Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

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